Problemset - Codeforces

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Problems

#	Name
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1404
126A	Hot Bath binary search, brute force, math	1900	x1402
1088E	Ehab and a component choosing problem dp, greedy, math, trees	2400	x1400
203D	Hit Ball geometry, implementation, math	1700	x1399
584E	Anton and Ira constructive algorithms, greedy, math	2300	x1396
452C	Magic Trick combinatorics, math, probabilities	2100	x1395
427E	Police Patrol greedy, implementation, math, ternary search	2000	x1395
1854C	Expected Destruction combinatorics, dp, math, probabilities	2500	x1393
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1393
1155E	Guess the Root brute force, interactive, math	2200	x1389
232B	Table bitmasks, combinatorics, dp, math	1900	x1387
463E	Caisa and Tree brute force, dfs and similar, math, number theory, trees	2100	x1384
382B	Number Busters binary search, math	2000	x1384
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x1383
1663D	Is it rated - 3 *special problem, combinatorics, dp, math		x1382
550E	Brackets in Implications constructive algorithms, greedy, implementation, math	2200	x1376
901B	GCD of Polynomials constructive algorithms, math	2200	x1373
1838E	Count Supersequences combinatorics, dp, math	2500	x1370
1170A	Three Integers Again *special problem, math		x1366
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1363
261B	Maxim and Restaurant dp, math, probabilities	1900	x1360
1036F	Relatively Prime Powers combinatorics, math, number theory	2400	x1359
993E	Nikita and Order Statistics chinese remainder theorem, fft, math	2300	x1359
1726E	Almost Perfect combinatorics, fft, math	2400	x1354
1623D	Robot Cleaner Revisit implementation, math, probabilities	2300	x1349
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x1349
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1347
86A	Reflection math	1600	x1340
1488A	From Zero To Y *special problem, math	900	x1335
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1334
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1330
303B	Rectangle Puzzle II implementation, math	1700	x1329
1156F	Card Bag dp, math, probabilities	2300	x1328
1039C	Network Safety dfs and similar, dsu, graphs, math, sortings	2200	x1312
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1310
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1305
87C	Interesting Game dp, games, math	2000	x1305
1912D	Divisibility Test math	1900	x1302
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory	2400	x1302
21B	Intersection implementation, math	2000	x1300
626E	Simple Skewness binary search, math, ternary search	2400	x1296
73A	The Elder Trolls IV: Oblivon greedy, math	1600	x1296
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1292
961G	Partitions combinatorics, math, number theory	2700	x1292
818F	Level Generation binary search, math, ternary search	2100	x1286
601C	Kleofáš and the n-thlon dp, math, probabilities	2300	x1286
15B	Laser math	1800	x1283
925C	Big Secret constructive algorithms, math	2200	x1282
908G	New Year and Original Order dp, math	2800	x1282
734F	Anton and School bitmasks, constructive algorithms, implementation, math	2500	x1279
698C	LRU bitmasks, dp, math, probabilities	2400	x1276
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1274
139B	Wallpaper implementation, math	1600	x1274
1109D	Sasha and Interesting Fact from Graph Theory brute force, combinatorics, dp, math, trees	2400	x1270
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x1267
1917E	Construct Matrix constructive algorithms, math	2500	x1265
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1264
1594F	Ideal Farm constructive algorithms, math	2400	x1262
1244G	Running in Pairs constructive algorithms, greedy, math	2400	x1262
1237E	Balanced Binary Search Trees dp, math	2400	x1262
457A	Golden System math, meet-in-the-middle	1700	x1262
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x1261
1845E	Boxes and Balls dp, implementation, math	2500	x1260
1286C1	Madhouse (Easy version) brute force, constructive algorithms, interactive, math	2400	x1255
201B	Guess That Car! math, ternary search	1800	x1252
251B	Playing with Permutations implementation, math	1800	x1249
1090L	Berland University greedy, math	2000	x1247
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1245
54C	First Digit Law dp, math, probabilities	2000	x1242
711E	ZS and The Birthday Paradox math, number theory, probabilities	2300	x1241
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1240
793C	Mice problem geometry, implementation, math, sortings	2300	x1230
660E	Different Subsets For All Tuples combinatorics, math	2300	x1230
938E	Max History combinatorics, math	2300	x1227
1443E	Long Permutation brute force, math, two pointers	2400	x1224
24C	Sequence of points geometry, implementation, math	1800	x1214
630Q	Pyramids geometry, math	1700	x1211
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1210
371E	Subway Innovation greedy, math, two pointers	2000	x1205
113C	Double Happiness brute force, math, number theory	2200	x1201
1458C	Latin Square math, matrices	2700	x1199
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x1195
1677D	Tokitsukaze and Permutations dp, math	2500	x1191
1495D	BFS Trees combinatorics, dfs and similar, graphs, math, shortest paths, trees	2600	x1191
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1188
639C	Bear and Polynomials hashing, implementation, math	2200	x1187
830C	Bamboo Partition brute force, data structures, implementation, math, number theory, sortings, two pointers	2300	x1183
772C	Vulnerable Kerbals constructive algorithms, dp, graphs, math, number theory	2300	x1183
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1182
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1182
1554E	You dfs and similar, dp, math, number theory	2600	x1179
593D	Happy Tree Party data structures, dfs and similar, graphs, math, trees	2400	x1178
336B	Vasily the Bear and Fly math	1900	x1176
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1167
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1166
1437F	Emotional Fishermen combinatorics, dp, math, two pointers	2600	x1163
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1162
710D	Two Arithmetic Progressions math, number theory	2500	x1156
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1153
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x1152